Elevator



(No Model.)

A. G. ELLITHORPE.

ELEVATOR.

N0. 391,598. Patented Oct. 23, 1888.

S E m W W N. FEI'ERS. Photo-Uflwgrlpher, Wnhinglon, u. c

Pannr rrrea.

ALBERT O. ELLITHORPE, OF CHICAGO, ILLINOIS.

ELEVATG R.

$PECIPICATION forming part of Letters Patent No. 391,598, dated October 23, 1.888.

Application filed April 25, 1887.

- enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in devices for safely controlling the operating mechanism of elevators, which improvements will be fully understood from the'following description, taken in connection with the annexed drawing, which is a front elevation of an elevator-cage having my improvements applied to it, the vertical guides and the overhead stationary beams being omitted from the view.

Referring to the annexed drawing by letter, A designates the cab or cage, which is provided with a cross -head, a, rigidly secured to the frame of the cage. Near this cross-head and 9 just below it is a lever, B, which is fulcrumed at I) to the lower end of a link, 0, hung from the said cross-head. The ends of the lever protrude through the upright portions of the cage and are free to vibrate about the fulcrum b. On one side of this lever and on one limb thereof is a long strap, 0, which is set off from the lever and secured only at its ends thereto. The upper edge of this strap may be notched, and from it depends an adjustable weight, W, for a purpose hereinafter explained. To one end, that end nearest to the loaded end, of the lever B is securely attached a cable, D, which is carried upward and passed over pulleys E E, which have their journals in an overhead beam. The cable is thence carried downward out of the way of the cab, passed underneath of a suspended sheave, D, and thence upward, and is securely attached to the lever B at e. The shafts is journaled in the head of a valverod, L, working vertically through the cap of a cylinder, N, and provided with a suitable valve. (Not shown in the drawing.) The valve-rod L has suitably applied to it a beam, K, provided with weights 9 g, for a purpose hereinafter explained. The cylinder N is pro Serial No. 236,079. (No model.)

vided with an air-chamber, h, and also with an outlet for water or steam.

It will be seen that the weight WV on the beam B serves as a tension device for the cable D. The said weight pulling upon the said cable will, through the medium of the beam B, tighten the said cable upon the sheave D, thereby compensating forwear andlost motion. The beam K,with its weights and sheaves, operatcd by gravity to depress a valve on the rod L, when desired, and the weight XV on the strap 0 of lever, is for adjusting and regulating the tension and to take up slack on the operatingropes.

F designates a cable, both ends of which are attached to the lever B equidistant from its fulcrum. The cable passes beneath two pulleys, G G, and around a double-grooved pilotwheel, H, which is keyed on a shaft, 91., suitably journaled on the cage A. To the shaft n is keyed a hand-lever, I, which is provided with a latch, 19, adapted to be actuated by the same hand which is used to vibrate this lever and its wheel H. This latch is designed to engage with notches f in a disk, J, which is concentric with the axes of shaft in and which is stationary. Now in operating the elevator to put it in motion the conductor takes hold of lever I when in the upright position shown in the annexed drawing. In this position of the parts the valve on red L is on its center and the cage stationary. By moving lever I.in one direction the lever K is acted on through the medium of the wheel H and the cable D, and said lever K is caused to actuate the said valve, and thus to allow the cage to be raised or lowered, as may be required.

The dotted lines on the drawing indicate that the upper end of the cable F may be attached at different points to the lever B.

Having described my invention, I claim-- 1. In a passenger or freight elevator, the combination, with a cage, A, and the operating-cable, of a grooved wheel, H, provided with a hand-lever and clutching device, a-eable, F, passed around this wheel and beneath pulleys G, and a lever, B, to which the ends of the said cable are attached, substantially as described.

2. The combination, with an elevator cage,

of the lever 18, provided with an adjustable In testimony whereof I affix my signature in weight and suspended from the cross-head of presence of two Witnesses, the cage, a cable, D, connected to both ends of said lever and passed over pulleys E E, the ELLITHORPE' cable F, and the sheave D, connected, as de- Witnesses: scribed, to a valve-rod and provided with a G. L. MITCHELL,

balanced beam, substantially as described. T. E. TURPIN. 

